Multipole umbrella tent



' Sept. 2, 1930. v D. M pd ALD v ,7

IULTIPQLE UMBRELLA HINT File d Aug. 22, 1927 v 7" a f i 7- Z I A? "INVENTOR,

' T ATTORNEYS.

Patented Sept. 2, 1930 UNITED STATES PATENT OFFICE MULTIPOLE EITHER-ELLA TENT Application filed August 22, 19:27.

This invention relates to tent structures and more especially to what are known as umbrella tents.

Umbrella tents commonly have a single, centrally disposed propping pole with a set of foldable rib arms to spread the corners of the tent top and upper wall portions. The central arrangement of the poles is very inconvenient, first, because it interferes with the use of the central floor area and, second, because the spread brace arms are in the head room.

The broad object of my present invention is to greatly increase the practical usefulness of umbrella tents by making the full central area of the floor from the door to the opposite wall available for use and, also, to provide full head room across the medial part of the tent.

Another object is to eliminate the central pole and to provide a multipole support and enable use of the same number of brace arms and to obtain a greater floor area with arms of no greater length.

Another object is to provide a hip roof or dome, umbrella tent characterized by a rigidly tensioned top and hip.

Other objects, advantages and features of the combination, the construct-ion and details will be made manifest in the following specification of the herewith illustrated embodiment; it being understood that modifications, variations and adaptations may be resorted to within the spirit, scope and principle oi the invention as it is more directly claimed hereinafter.

Figure 1 is a vertical, longitudinal section.

Figure 2 is a sectional plan. 7

Figure 3 is a detail of the spreading strut.

Figure 4 is a detail of one end of a brace arm.

It may be mentioned that a cardinal object is to provide an umbrella tent of considerable oor area and yet structurally of utmost simplicity.

Heretofore umbrella tents have always had a single, centrally stood pole and in practical sizes of these tents the poles occupy a most disadvantageous position.

I have devised and successfully construct- Serial No. 214,663.

ed and used an improved umbrella tent having a hipped top or dome 2 whose ridge 3 is supported and highly tensioned by means of a pair of poles l4rset on the longer axis of the tent floor 5.

These poles carry slides 6 which have, each, a pair 01 pivoted brace arms 7 diagonally reaching roof corners 8 having grommets 9 for the reduced ends of the arms.

In erecting the tent the poles are entered through an open door side 10 and set in the ends of the ridge 3 with their lower ends on the axis of the floor 5. Then the arms 7 are set in the corner grommets 9 and the slides 6 are pushed up until the side walls 12 and the top 2 are all taut.

In order to stiifen the poles 4 against reaction of the walls a spreading strut 13 is wedged in place between the poles in a position above the slides so as to give ample head room. This strut is shown as having an eX tensible section 13 pivoted of? center in a trough 15 fixed on part 13. hen drawn down into place the reaction of the poles locks the oil center section 13 in the trough by pressing the inner end of the section down against the bottom of the trough. A series of pin holes 16 allows for adjus ment of the sec- .tion 13 to vary the eilective length of the strut.

Grommets will be employed where needed for poles and braces.

The floor 5 is tensioned by stake straps 1?.

It will be seen that the improved tent gives ample room at either end for a camp bed 13 disposed transversely of the floor and that a wide central area of the floor from the door to the back wall is available between the poles.

The arms 7 are all oil to the side: of the space'betwecn the poles and full head room is had because the strut 131's disposed above the arm-carrying slides 6, which may be about head high since the arms overreach the bed space at the ends oi the tent. V

In a given width of tent I am able to obtain a much increased floor area by the use of two spaced poles and at the same time employ brace arms of no greater length than in a single pole tent or" the same width. And I use no greater number of top brace arms.

By my present invention a most practicable, S-tt. X 12ft. tent can be obtained; this accomplished by the two-pole tour-arm combination, using the strut it and when so desired.

\Vhen the distance between the poles 4 is such that the ridge might sag a set of center arms 18, pivoted on the brace 13, is provided to supportthe ridge and the tops of the long side walls.

What is claimed is:

1. A tent having walls a hip root presenting an elongated ridg a plurality of center poles engaging the ends of the ridge and having diagonal root supporting arms and being spaced in from the walls, and a spread ing strut extending from pole to pole and whereby the ridge is placed under tension between the poles.

A tent having walls and a hip root presenting an elongated poleless ridge a plurality of ridge engaging poles standing in the plane of the idge, each pole having radially extending corner brace arms, and a spreading strut reaching from pole to pole and spaced below the ridge and comprising toldable sections abutting said poles.

A center-polesupport tent having a hip root presenting an elongated ridge of less length than the tent, a pair of poles on the vertical plane of the ridge and bearing the ends thereof, roof arms mounted on the poles and projecting to diagonally adjacent corners of the root, a spread-strut extending from pole to pole, and a ridge brace which is mounted on said strut and operative to support the ridge between the poles.

CHARLES D. Bic/DONALD. 

